Food of the robins and bluebirds of the United States /
Beal, F. E. L. 1840-1916.
Food of the robins and bluebirds of the United States / by F.E.L. Beal. - Washington, D.C. : U.S. Dept. of Agriculture, 1915. - 31 p. : ill. ; 23 cm. - Bulletin of the U.S. Department of Agriculture ; no. 171 .
Caption title. Contribution from the Bureau of Biological Survey.
agr15000319
Bluebirds.
Robins.
Birds--Food.
S21 / .A7 no. 171
1 / Ag84B no.171
Food of the robins and bluebirds of the United States / by F.E.L. Beal. - Washington, D.C. : U.S. Dept. of Agriculture, 1915. - 31 p. : ill. ; 23 cm. - Bulletin of the U.S. Department of Agriculture ; no. 171 .
Caption title. Contribution from the Bureau of Biological Survey.
agr15000319
Bluebirds.
Robins.
Birds--Food.
S21 / .A7 no. 171
1 / Ag84B no.171